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Mar 15
RT @ecpowellmusic: It's official, NOISE ZOMBIE is a winner in the 2018 SynthMaster Track Contest! Honored to place 3rd competing with many…
Mar 15
RT @bytemappermusic: @Ghost__Arcade Synthmaster One putting in some work, good shit man

KV331 Audio was founded in 2012 by a dedicated team of engineers, musicians, and sound designers with the sole purpose of providing high-quality virtual instruments for musicians globally. Its flagship soft synth, SynthMaster, has over 24,000 licensed users in over 110 countries and received numerous awards from prestigious music technology publications around the world; while walking away from MusicTech Magazine's 2016 Gear Of The Year awards as a Gold Award Winner in the 'Best Software Instrument/Sample Library' category, MusicRadar readers recently ranked it number one in their '50 best VST/AU plugin synths in the world today' survey.

News & DealsMore

10 Jan 2018KV331 Audio updates SynthMaster and SythMaster Player to v2.9.6 22 Dec 2017KV331 Audio releases SynthMaster 2.9: Adds wavetable features, new factory presets, in-app-store and internationalization (I18N) support 6 Dec 2017KV331 Audio updates SynthMaster One to v1.1: adding new factory presets, in-app-store and critical fixes 30 Nov 2017#KVRDeal Expired KV331 Audio announces SynthMaster Track Contest with $2000 cash and software license prizes 22 Nov 2017#KVRDeal Expired KV331 Audio 50% Off "Black Friday Week Sale" between November 21-30 7 Nov 2017#KVRDeal Expired KV331 Audio announces 50% Off Sale for SynthMaster One and SynthMaster Preset Expansions through November 31 Jul 2017KV331 Audio updates SynthMaster One to v1.0.5 - adds AAX support and new factory presets 4 Jul 2017#KVRDeal Expired KV331 Audio Summer Sale: 30%-50% Off SynthMaster 3 Jul 2017KV331 Audio updates SynthMaster and SynthMaster Player to v2.8.10 with scaled UI support, new factory presets and critical bug fixes 20 Jun 2017KV331 Audio updates SynthMaster to v2.8.9 - adds resizeable UI support and 70 new factory presets 10 May 2017KV331 Audio updates SynthMaster One to v1.0.4 - Adds UI Scaling and Retina Support 3 Apr 2017#KVRDeal Expired KV331 Audio 20%-50% Off SynthMaster Spring Sale 31 Mar 2017KV331 Audio updates SynthMaster One to v1.0.2 - New factory presets and MIDI Program Change support 27 Feb 2017KV331 Audio releases SynthMaster One Wavetable Synthesizer for Mac & Win 23 Nov 2016#KVRDeal Expired KV331 Audio SynthMaster 50% Off "Black Friday Week Sale" between November 21-30 11 Nov 2016#KVRDeal Expired KV331 Audio Song Competition: $2000 cash prizes for SynthMaster, SynthMaster Player and SynthMaster Player for iPad 3 Nov 2016KV331 Audio updates SynthMaster and SynthMaster Player to v2.8.6 - adds MIDI Program Change and MIDI Bank Change support 2 Nov 2016#KVRDeal Expired KV331 Audio SynthMaster Player 70% Off Through November 2 Aug 2016#KVRDeal Expired KV331 Audio Summer Sale: 35% off SynthMaster and SynthMaster Player 25 May 2016KV331 Audio releases SynthMaster 2.8 and SynthMaster Player 2.8 - Major enhancements and bug fixes

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KVR Forum
(Latest Posts)

'ParameterMetadata.xml' Error Message [SynthMaster v2.9.6]
by aspsa at 16 Mar 2018, 13:56

[FIXED] Using the retrigger option on the Glider SLFO
by dancovich at 12 Mar 2018, 09:07

Bug on modulator frequency when selecting semitones
by dancovich at 8 Mar 2018, 14:00

How to reach our support
by aspsa at 3 Mar 2018, 10:31

Synthmaster One / Bitwig
by bbreakz at 24 Feb 2018, 13:34

Presets with problems
by bugaj at 16 Feb 2018, 22:09

Just a few comments on SM One
by fluffy_little_something at 14 Feb 2018, 13:26

Using the Vocoder in Synthmaster
by Chandlerhimself at 14 Feb 2018, 01:03

WannaCry in GUIEditor
by chk071 at 13 Feb 2018, 13:50

SynthMaster's interpretation of sample loop info
by cthonophonic at 11 Feb 2018, 12:28

more info on synthmaster engine quality settings?
by cthonophonic at 5 Feb 2018, 00:33

SynthMaster 2.6, 2.7 roadmap, add your feature requests...
by zuch at 4 Feb 2018, 20:27

Is KV331 Support down
by zuch at 31 Jan 2018, 16:50

Help with LFOs
by rockmachine at 31 Jan 2018, 08:55

Synthmaster Bug Report
by sqigls at 21 Jan 2018, 08:05

Is the latest version of synthmaster akai vip 3.0 compatible ?
by lectropunk at 17 Jan 2018, 09:43

Synthmaster / Bitwig problem - muffled synth
by bbreakz at 15 Jan 2018, 11:10

Synthmaster2 GUI red line fix
by sqigls at 14 Jan 2018, 19:37

by bbreakz at 14 Jan 2018, 09:16

GUI Editor issue
by Distorted Horizon at 13 Jan 2018, 08:27

Discussion: Active


7 May 2016 at 2:12pmspmadmin

Crappy support.

Tried to acquire a SynthMaster license second hand. Paid the seller and he contacted KV331 transfer the license. A week went by - with no response from KV331. Had to cancel the deal. The seller did what he could, but KV331 just did not respond. Never getting any of their products.


7 May 2016 at 7:05pmSoundGoddess

Sorry that you had this issue. I've had good experiences with KV331 myself. They have a lot of sales, if you sign up for their newsletter or follow them on social media you can save money that way. Buying used software from third party sellers is kind of hit-and-miss IME. I'd be hesitant to formulate your opinions on a company based on your experiences with a third party seller.

7 May 2016 at 2:50pmMidifinger

I don't think the licenses are transferable. Synthmaster is a really nice synth, never had any problems with mine.

7 May 2016 at 3:06pmmikemusicked

Had several questions through the years and Bulent has always been great. One of my favorite and most used VSTs.




31 May 2016 at 10:14pmblu789

Synthmaster 2.8 Doesn't Even Load On Windows 7 x64 Ableton Live 9.6.1


Uinstalled Synthmater from Control Panel
Deleted Documents/Synthmaster
Deleted Documents/Synthmater27temp
Deleted Program files/VstPlugins/Kv331 Audio (my custom location for Synthmater 2.8)
Deleted Program Files (x86)/VstPlugins/Kv331 Audio (my custom location for Synthmater 2.8)

Fresh install.

Copied My personal License File to Documents/Synthmaster.

Emtpy project, added Synthmater 2.8 to a new MIDI track. . .

"Ableton Live"
"A serious program error has occured. Live will shut down after this message box is closed.

Please restart Live and follow the instructions in the 'Report A Crash' lesson that will appear in Live's Help View."


2.8 wasn't tested enough that's for sure. :/.

Tim Otholt.


31 May 2016 at 11:08pmmadfiddler

Thanks for the info. I'm just finishing up on a game OST and was about to upgrade... then thought... WAIT.....*phew*.

5 August 2017 at 5:20pmscratchnsnifff

not sure if this is where i report a bug, but in reason 9.5 I'm using synth master one, and when i open the plugin to modify an FM patch I'm making the semitones and octave changes when ever i close and reopen the plugin.

each time i close and re open the semitones are set to 11 and the pitch octaves are at -3.

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